Hello, am having problems installing Win7 Ultimate on my laptop running Vista Ultimate (ACER Aspire 6935G). I was trying to do a fresh install. Here is what I did. Formatted C:\ drive and then installed the AHCI RAID drivers for my drive. Then I get the error message that I cannot install Win7 on this drive . And cannot proceed. So I just restored my vista using my saved image file of the entire C:\ drive. Any help would be greatly appreciated.